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EP1272013A3 - Process of forming an electrode - Google Patents

Process of forming an electrode Download PDF

Info

Publication number
EP1272013A3
EP1272013A3 EP02252891A EP02252891A EP1272013A3 EP 1272013 A3 EP1272013 A3 EP 1272013A3 EP 02252891 A EP02252891 A EP 02252891A EP 02252891 A EP02252891 A EP 02252891A EP 1272013 A3 EP1272013 A3 EP 1272013A3
Authority
EP
European Patent Office
Prior art keywords
separator
emissive element
emissive
electrode
copper holder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02252891A
Other languages
German (de)
French (fr)
Other versions
EP1272013A2 (en
Inventor
Valerian Nemchinsky
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ESAB Group Inc
Original Assignee
ESAB Group Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ESAB Group Inc filed Critical ESAB Group Inc
Publication of EP1272013A2 publication Critical patent/EP1272013A2/en
Publication of EP1272013A3 publication Critical patent/EP1272013A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K10/00—Welding or cutting by means of a plasma
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • H05H1/34—Details, e.g. electrodes, nozzles
    • H05H1/3442—Cathodes with inserted tip

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)
  • Plasma Technology (AREA)

Abstract

A method of forming an electrode for a plasma arc torch is disclosed, and wherein the electrode comprises a copper holder defining an opening therein. An emissive element is secured to a cavity formed in a relatively non-emissive separator having a solid rear wall at one end thereof. The emissive element and separator are positioned within the opening defined by the copper holder such that the emissive element is surrounded by the separator and the copper holder. In this regard, the emissive element is prevented from movement along the longitudinal axis of the torch relative to the separator during a post-assembly heating step. In addition, the emissive element is not exposed to the atmosphere during the heating step, which allows a greater bond between the emissive element and the separator.
EP02252891A 2001-05-31 2002-04-24 Process of forming an electrode Withdrawn EP1272013A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US870896 2001-05-31
US09/870,896 US6423922B1 (en) 2001-05-31 2001-05-31 Process of forming an electrode

Publications (2)

Publication Number Publication Date
EP1272013A2 EP1272013A2 (en) 2003-01-02
EP1272013A3 true EP1272013A3 (en) 2006-06-14

Family

ID=25356281

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02252891A Withdrawn EP1272013A3 (en) 2001-05-31 2002-04-24 Process of forming an electrode

Country Status (5)

Country Link
US (1) US6423922B1 (en)
EP (1) EP1272013A3 (en)
JP (1) JP3708063B2 (en)
KR (1) KR100491691B1 (en)
CA (1) CA2386663C (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6563075B1 (en) * 2001-12-20 2003-05-13 The Esab Group, Inc. Method of forming an electrode
US20050029234A1 (en) * 2003-08-04 2005-02-10 Feng Lu Resistance spot welding electrode
US20070045241A1 (en) * 2005-08-29 2007-03-01 Schneider Joseph C Contact start plasma torch and method of operation
US20070173907A1 (en) * 2006-01-26 2007-07-26 Thermal Dynamics Corporation Hybrid electrode for a plasma arc torch and methods of manufacture thereof
TW201231201A (en) * 2011-01-31 2012-08-01 Wen-Yi Fang Electrode head of the plasma cutting machine
CN102423823B (en) * 2011-10-09 2013-04-10 上海工程技术大学 Vacuum brazing process of plasma cutting electrode
US9949356B2 (en) * 2012-07-11 2018-04-17 Lincoln Global, Inc. Electrode for a plasma arc cutting torch
US9386679B2 (en) 2013-07-31 2016-07-05 Lincoln Global, Inc. Apparatus and method of aligning and securing components of a liquid cooled plasma arc torch using a multi-thread connection
US9313871B2 (en) 2013-07-31 2016-04-12 Lincoln Global, Inc. Apparatus and method of aligning and securing components of a liquid cooled plasma arc torch and improved torch design
US9338872B2 (en) 2013-07-31 2016-05-10 Lincoln Global, Inc. Apparatus and method of aligning and securing components of a liquid cooled plasma arc torch
US9560733B2 (en) 2014-02-24 2017-01-31 Lincoln Global, Inc. Nozzle throat for thermal processing and torch equipment
US9398679B2 (en) 2014-05-19 2016-07-19 Lincoln Global, Inc. Air cooled plasma torch and components thereof
US9572243B2 (en) 2014-05-19 2017-02-14 Lincoln Global, Inc. Air cooled plasma torch and components thereof
US9572242B2 (en) 2014-05-19 2017-02-14 Lincoln Global, Inc. Air cooled plasma torch and components thereof
US9736917B2 (en) 2014-08-21 2017-08-15 Lincoln Global, Inc. Rotatable plasma cutting torch assembly with short connections
US9681528B2 (en) 2014-08-21 2017-06-13 Lincoln Global, Inc. Rotatable plasma cutting torch assembly with short connections
US9730307B2 (en) * 2014-08-21 2017-08-08 Lincoln Global, Inc. Multi-component electrode for a plasma cutting torch and torch including the same
US9457419B2 (en) 2014-09-25 2016-10-04 Lincoln Global, Inc. Plasma cutting torch, nozzle and shield cap
US9686848B2 (en) 2014-09-25 2017-06-20 Lincoln Global, Inc. Plasma cutting torch, nozzle and shield cap
US10863610B2 (en) 2015-08-28 2020-12-08 Lincoln Global, Inc. Plasma torch and components thereof
DE102016010341B4 (en) 2015-08-28 2024-08-01 Lincoln Global, Inc. PLASMA TORCH AND PLASMA TORCH COMPONENTS
US10639748B2 (en) 2017-02-24 2020-05-05 Lincoln Global, Inc. Brazed electrode for plasma cutting torch
USD861758S1 (en) 2017-07-10 2019-10-01 Lincoln Global, Inc. Vented plasma cutting electrode
US10589373B2 (en) 2017-07-10 2020-03-17 Lincoln Global, Inc. Vented plasma cutting electrode and torch using the same
US11678428B2 (en) 2019-08-02 2023-06-13 The Esab Group, Inc. Method of assembling an electrode

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5548538A (en) * 1978-10-04 1980-04-07 Toshiba Corp Manufacturing method of electrospark machining electrode material
EP0465109A2 (en) * 1990-06-26 1992-01-08 Daihen Corporation Electrode for use in plasma arc working torch
US6114650A (en) * 1998-08-12 2000-09-05 The Esab Group, Inc. Electrode for plasma arc torch and method of making same

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Publication number Priority date Publication date Assignee Title
NL290760A (en) 1962-03-30
US3930139A (en) 1974-05-28 1975-12-30 David Grigorievich Bykhovsky Nonconsumable electrode for oxygen arc working
US4056644A (en) 1975-10-09 1977-11-01 Howard Alfred S Method of coating annular surfaces
SE426215B (en) 1978-05-11 1982-12-20 Vni Pk I Tech Inst Elektrosvar NON-MELTING ELECTRODES FOR PLASMA BAKING WELDING AND PROCEDURES FOR PRODUCING THEREOF
SE452862B (en) 1985-06-05 1987-12-21 Aga Ab LIGHT BAGS LEAD
DE3635369A1 (en) 1986-10-17 1988-04-28 Degussa METHOD FOR COATING SURFACES WITH HARD MATERIALS
JPS63248538A (en) * 1987-04-03 1988-10-14 Mitsubishi Heavy Ind Ltd Manufacture of plasma torch
JPH0747223B2 (en) 1987-09-22 1995-05-24 トヨタ自動車株式会社 Electrode tip for resistance welding
DE3904213C1 (en) 1989-02-13 1990-04-05 Hoesch Stahl Ag, 4600 Dortmund, De
US5004888A (en) * 1989-12-21 1991-04-02 Westinghouse Electric Corp. Plasma torch with extended life electrodes
US5097111A (en) 1990-01-17 1992-03-17 Esab Welding Products, Inc. Electrode for plasma arc torch and method of fabricating same
US5023425A (en) 1990-01-17 1991-06-11 Esab Welding Products, Inc. Electrode for plasma arc torch and method of fabricating same
JP2917435B2 (en) * 1990-06-26 1999-07-12 株式会社ダイヘン Electrode for plasma arc machining and method of manufacturing the same
JPH06650A (en) * 1992-06-23 1994-01-11 Kobe Steel Ltd Contact chip and its production
JP2591371Y2 (en) 1993-02-24 1999-03-03 株式会社小松製作所 Plasma arc torch
US5670248A (en) 1994-07-15 1997-09-23 Lazarov; Miladin P. Material consisting of chemical compounds, comprising a metal from group IV A of the periodic system, nitrogen and oxygen, and process for its preparation
US5851678A (en) 1995-04-06 1998-12-22 General Electric Company Composite thermal barrier coating with impermeable coating
JPH08288095A (en) 1995-04-19 1996-11-01 Komatsu Ltd Electrode for plasma arc torch
US5857888A (en) 1996-10-28 1999-01-12 Prometron Technics Corp. Method of manufacturing a plasma torch eletrode
US5676864A (en) 1997-01-02 1997-10-14 American Torch Tip Company Electrode for plasma arc torch
US5767478A (en) 1997-01-02 1998-06-16 American Torch Tip Company Electrode for plasma arc torch
US6066827A (en) 1997-09-10 2000-05-23 The Esab Group, Inc. Electrode with emissive element having conductive portions

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5548538A (en) * 1978-10-04 1980-04-07 Toshiba Corp Manufacturing method of electrospark machining electrode material
EP0465109A2 (en) * 1990-06-26 1992-01-08 Daihen Corporation Electrode for use in plasma arc working torch
US6114650A (en) * 1998-08-12 2000-09-05 The Esab Group, Inc. Electrode for plasma arc torch and method of making same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 004, no. 092 (M - 018) 3 July 1980 (1980-07-03) *

Also Published As

Publication number Publication date
US6423922B1 (en) 2002-07-23
CA2386663C (en) 2006-04-25
JP3708063B2 (en) 2005-10-19
KR100491691B1 (en) 2005-05-25
JP2003051399A (en) 2003-02-21
CA2386663A1 (en) 2002-11-30
EP1272013A2 (en) 2003-01-02
KR20020091777A (en) 2002-12-06

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